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Bigger or Smaller?
Age 14 to 16
Challenge Level 
- 1 cm ^2\rightarrow 10^{-4} m ^2
- 1 foot \rightarrow 12 inches
- 1 mile \rightarrow 1.6 kilometres
- 1 litre \rightarrow 1000 cm ^3
- 1 foot ^3\rightarrow 1728 inches ^3
- 1 m s ^{-1}\rightarrow 2.25 miles / hour
- 1 mm ^3\rightarrow 10^{-9} m ^3
- 1 degrees C \rightarrow 1 degrees K
- 85 degrees \rightarrow 1.48 radians
- 1 Pa \rightarrow 10 cm^{-1} g s^{-2}
- 1 W \rightarrow 10^{7} cm^2 g s^{-3}
- 1 Hz \rightarrow 60 per minute
- 1 Mol \rightarrow 6\times10^{11} trillion
- Molarity of 1\rightarrow 6\times10^{17} per cm^3
- 1 katal \rightarrow 6\times10^{-1} million million per picosecond
